帮我写一个python的贪吃蛇脚本

好的，以下是一个简单的 Python 贪吃蛇脚本：

import pygame
import random

pygame.init()

# 游戏窗口尺寸
width = 500
height = 500

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

# 创建窗口
game_display = pygame.display.set_mode((width, height))
pygame.display.set_caption('贪吃蛇')

# 定义游戏时钟
clock = pygame.time.Clock()

# 定义贪吃蛇快照列表和初始位置
snake_size = 10
snake_speed = 15
snake_list = []
snake_head = [width / 2, height / 2]
snake_list.append(snake_head)

# 定义食物位置
food_x = round(random.randrange(0, width - snake_size) / 10) * 10
food_y = round(random.randrange(0, height - snake_size) / 10) * 10

# 绘制方块图形函数
def draw_block(surface, color, position):
    block = pygame.Rect((position[0], position[1]), (snake_size, snake_size))
    pygame.draw.rect(surface, color, block)

# 游戏主循环
game_exit = False
while not game_exit:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_exit = True

    # 按键操作
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        snake_head[0] -= snake_size
    if keys[pygame.K_RIGHT]:
        snake_head[0] += snake_size
    if keys[pygame.K_UP]:
        snake_head[1] -= snake_size
    if keys[pygame.K_DOWN]:
        snake_head[1] += snake_size

    # 更新位置
    snake_head = snake_list[-1].copy()
    snake_head[0] += snake_size
    snake_list.append(snake_head)

    if snake_head[0] == food_x and snake_head[1] == food_y:
        food_x = round(random.randrange(0, width - snake_size) / 10) * 10
        food_y = round(random.randrange(0, height - snake_size) / 10) * 10

    else:
        snake_list.pop(0)

    # 绘制游戏界面
    game_display.fill(white)
    draw_block(game_display, red, [food_x, food_y])
    for position in snake_list:
        draw_block(game_display, black, position)

    pygame.display.update()

    # 设置游戏时钟
    clock.tick(snake_speed)

# 退出游戏
pygame.quit()
quit()

希望这个脚本可以帮到你！